An object is at rest on the ground. the object experiences a downward gravitational force from earth. which of the following predictions is correct about why the object does not accelerate downward? select two answers. justify your selections.

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Carbon 14 is a naturally occurring stable

The radius of an atom is closest in size to a